GPU help

Hello, I was recently searching for a new graphic card ( from any company, Nivida, Ati, etc.) and I was looking for some advice.... here is what I was looking for.

Something more than $200 but less than $400

Can play most games on high/max settings with decent AA and AF with at least a 30FPS

Works fine with Multi-core CPU rated at 4.44GHz

thanks

Sorry, just figured that out right now.....But how powerful should my power supply be? I don't really know what mine is....but what would be best for a HD4870?ilikegodofwar21

I would recommed at least 600W powersupply that has the two 6pin connectors required for it. However a powersupply with just one 6pin,500W+converter should work. Check your powersupply by opening up your case. It will say maxoutput on it. I would recommon this one, if you need to buy a new one. LINK